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Finding the Fourth Proportional to 321,998.75, 482,998.13 and 100,382.75

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Solution

The fourth proportional to 321,998.75, 482,998.13 and 100,382.75 is: 150,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,998.75 : 482,998.13 = 100,382.75 : x
  2. Step 2: Convert to fraction form
    321,998.75/482,998.13 = 100,382.75/x
  3. Step 3: Cross multiply
    321,998.75x = 482,998.13 × 100,382.75
  4. Step 4: Simplify right side
    321,998.75x = 48,484,680,534.26
  5. Step 5: Solve for x
    x = 48,484,680,534.26/321,998.75
  6. Step 6: Final answer
    x = 150,574.13

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.